If the italicized part of the sentence is the word <em>courses, </em>then the correct answer is predicate noun/nominative.
A predicate nominative is the first noun found after a linking verb, such as to be, or in this sentence, the verb <em>are. </em>You can see that the first noun following the verb <em>are </em>is the word <em>courses, </em>which means it is a predicate nominative.
(Last sentence) Do you believe the story about the president (George Washington) who, as a boy, admitted to his father that he cut down the cherry tree?
The right answer is B because it shows the work that they did to earn their money.